I feel like most of the space related fimfiction stories I could find are mostly fantasy with shields, warping, absence of g-forces, magical gravity, and various other tropes. However, are there any science fiction space stories out there that stick to realistic principles? It would be nice to discover some stories about The Expanse or ones related to it that might have flown under my radar.

On the topic of The Expanse:
A crossover story with one of the ring gates in the hub that leads to the Equis solar system and the following discoveries about the geocentric nature of it that astonishes everyone, and the eventual ridiculous first contact with disputes, diplomacy, and science is certainly something that would be interesting.

7400111 There's  Celestia Visits Nightmare Moon, which features the moon where no sound can be made because it doesn't have an atmosphere.

The martian.